add sleeper, to reduce cpu usage.

lichao

2021-05-20 6b96ee857e366af317ab9dc1b6b4f9c22576e83b

 .gitignore

@@ -1,2 +1,13 @@
*.un~

build/
debug/
release/
Makefile
utest/utest
*.bak
gmon.out
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea